Is Mi Air Purifier 3 the best air purifier? Here is an honest review.

The Mi Air Purifier 3 is a rebuilt version of its previous model. It is bigger and even better with its touch display mode and the all-new air intake feature. And it’s extremely affordable!!

The world as we speak is deteriorating in many ways. Clean air, clean water, and clean land have become necessities to fight for. Pollution has come up to be the ultimate threat to existence. It is affecting millions of people on an everyday basis.

Albeit the government is opting for new measures to solve the problem of pollution, the problem of indoor pollution still retains. Indoor pollution is a major threat to your and your family’s health.

In most cases, people do not even realize the unhealthy air they have been breathing in. This is also why an air purifier is a must these days, especially if you are in a metropolitan city. Xiaomi has come up with 2 perfected air purifiers to help you out.

At first, Xiaomi came up with the Mi Air Purifier 2C which is available at Rs 6499/- and it’s updated version is the Mi Air Purifier 3 available at Rs 9999/-. But, how well does this upgrade work? Is it worth buying? These are the questions that our Mi Air Purifier Review will answer for you.

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How Different does Mi Purifier 3 Look?

In all honesty, the Mi Purifier does not look much different than its previous version. In fact, it is quite different to pinpoint the difference unless you are looking too closely. When it comes to the outlook, Xiaomi has strictly followed the exterior design of Mi Purifier 2c. This somehow works in the favor as it marks Xiaomi’s minimalistic style statement.

Shapewise, the Mi Air Purifier 3 holds the same rectangular box-like design. There is a perforation on every side of the box to suck the air in. The air is released from the top. The air purifier works as decor too. Because of its all-white and lightweight appearance, it can be fixed anywhere in the house. It is made of plastic and suits the decor of your house perfectly. Another unchanged feature is the convenient opening of the filter cover. The rear panel is quite simple to open and then, you can easily get access to the filter.

However, there are some differences that make Mi Air Purifier’s buy not so easy. The Mi Air Purifier 2C is conveniently built. But it does lack the additional features that have been added in Mi Air Purifier 3.

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Difference Between Mi Purifier 3 and Mi Purifier 2s

The newly built Mi Air Purifier 3 comes with both obvious and some discreet changes.

The Obvious Changes

One of the starkest differences that you will notice is the new OLED touch display. Unlike the previous model that has so many buttons, the Mi Air Purifier has more technical touchpads.

The display is circular in shape and holds a button that you can press to turn the machine on or off. You can also use this button to switch between the multiple operations that run in the purifier. This single-touch button is circled by an RGB ring.

The RGB ring gives the PM 2.5 updates regularly in real-time. You can also see some changes in the interior portion of the air purifier. For instance, the insides of it have been streamlined to enhance the air suction quantity.

The corners have also been modified to square shapes. A grille with wider openings has also been installed. The fan that has been installed is centrifugal which helps in cleaning the air even faster. The only disadvantage of this air purifier is the power cord which could have been longer.


The Discreet Changes

With a Clean Air Delivery Rating (CADR) of 380 m³/h, the Mi Air Purifier 3 has been given an upgrade of 22% as compared to the Mi 2C. This is additionally supported by the fact that it can easily cover an area of up to 484 sq. ft. This means, whether it’s your bedroom or your drawing hall, you can easily benefit clean air from it in every corner.

Consider your bedroom to be of 250 sq. ft approx. This would be really easy for the Mi Air Purifier 3 to cover. Even on the most polluted days when your PM 2.5 level would reach numbers as massive as 250, all you have to do is turn the centrifugal fan on.

The fan at its highest speed would take around 10 minutes to bring down the PM 2.5 levels to below 100. This is how good it is at it. In fact, on clean days, the air purifier displays PM 2.5 levels as unbelievably low 005.

The Mi Air Purifier 3 boasts an auto mode. In auto mode, the centrifugal fan has the ability to change its speed automatically. When the air quality is poor and the RGB ring turns red, the machine can be really loud.

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However, you get all the options to control the speed of the fan manually. From low to medium to high, you can choose the settings as per your requirement.

The machine also is thoughtfully endowed with a sleep mode. The sleep mode keeps the fan at its slowest speed. This is to keep a check on the decibel levels. But, even at its highest speed, the air purifier is still comparatively more silent than any standard window AC.

Xiaomi has also made some amazing improvements in the filtration of Mi Air Purifier 3. The biggest transformation given to this feature is the Class13 HEPA filter. This is a filter that has never failed to impress its customers.

The filter is exclusively built to capture the finest particles present in the air. It is built with a 3-layer system and each layer plays specific vital roles.

The first layer is the primary filter layer. It filters bigger contaminants like hair and dust present in the air.

The middle layer is the HEPA filter layer. This layer is efficient in cleaning finer particles present in the air like smoke, pollen, dust or any other contaminants that have a size as small as 0.3 microns.

The final layer of the filter is made of activated carbon. Its main purpose is to filter the air from toxicities like odor, bacteria, formaldehyde, etc.

Another remarkable thing about this filter is that it is far more effective than other filters used in previous models. It is durable and can last up to 6 months even if you use it for 8 hours every day.

When it comes to purchasing new filters, Xiaomi has been selling these filters at Rs 2199/- on its official website. However, you will need to keep a constant check as the filters run out of stock quickly.

Apart from the filtration, Xiaomi has also modified the air suction and outflow features in the air purifier. With a modified centrifugal fan, a streamlined interior and wider opening for better air release, this is definitely an upgrade worth looking into.


How Well Does the Mi Purifier Actually Work?

The biggest misconception people have while buying an air purifier is that they seem to believe that the air purifier is releasing oxygen rather than just cleaning the air. You need to understand that Mi Air Purifiers (and every other air purifier for that matter) does not produce oxygen.

An air purifier’s only function is to clean the air. It filters PM 2.5 contaminants from the air as well as other particles that can harm your respiratory system otherwise. Apart from that, if you really seek fresh oxygen, you can just add more potted plants in your house. That trick always works!

In a country like India where firecrackers have an emotional meaning for people, an air purifier is the best solution to seek relief from the gases burning your chest. The air pollution is so high that you can almost feel symptoms like eye irritation, heaviness in breathing, dizziness or headaches.

When you walk into a room with a functioning air purifier, you can see the difference instantly. All the symptoms disappear. You are able to sleep comfortably at night while the air purifier sucks in the contaminants and you feel way healthier than before.

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Mi Purifier PM 2.5 Filter

As we mentioned above, as pollution rises, you can experience several disturbing symptoms. Headaches, breathlessness, irritation in the eye are some of the more common symptoms.

The Mi Air Purifier 3 can rid you of these symptoms within ten minutes as it cleans the air and makes you feel healthier again. You can keep the Purifier on for multiple hours.

A word of advice would be to keep it switched on even while cooking. This is because cooking can be a cause of rising in PM 2.5 levels. The Mi Air Purifier would filter the smoke that comes from cooking, leaving your air pure to breathe.


How Long Does it Take For Mi Purifier 3 to Clean the Air?

We mentioned above in the Mi Air Purifier review that the air purifier takes about ten minutes to clean the complete air of a regular-sized room. It has CADR (Clean Air Delivery Rating) of 380 cubic meters/hour. As compared to the 310 CADR of Mi Air Purifier 2C, this is a massive development.

This machine can cover up to an area of 484 sq. ft. If you install it in a room of 150 sq. ft., you can see that even on the most polluted days, it can bring the PM 2.5 level from around 500 to 80 or 90 in a matter of 20 minutes. When pollution levels are as high as 150 to 200, the Mi Air Purifier 3 does the job of maintaining levels ten times lower.


Is Mi Purifier Easy to Use?

The Mi Air Purifier 3 may come off as a complex machine initially because of its sophisticated build. However, contrary to the fear, this machine is extremely easy to handle. Even a five-year-old can work it out manually despite all the advanced technical features.

As soon as you plug it into the socket, the display turns on. You need to long-press the touch button and the machine is switched on. Every time you turn it on, the Mi air purifier will show you the data explaining the air quality.

When the air is dangerously polluted, the RGB ring will turn red to indicate the seriousness. Other times, the ring stays green when the air is healthy to breathe in. The machine also displays the level of humidity as well as the temperature maintained in the room.

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Mi Air Purifier 3 Smart Device

The Mi Air Purifier buy is justified as it is not only efficient in cleaning the air but also has several smart features. It can connect to WiFi.

You can latch the device to the WiFi network in your home and control the device via the Mi Home App. In doing so, you can switch it on/off, place a parental lock on it, keep a track of the air quality in your room, etc.

However, the app does not show the AQI data and neither does it explain how it works on cleaning the air or how to clean the Mi air purifier filter. There are even more interesting features included.

You can connect the air purifier to advanced AI built Google or Alexa speakers. These speakers will enable you to have control over the machine via voice. All you have to do is a command like royalty. This is also convenient because you will not need to get up from your seat or bed every time you want to switch it off or on. You can just command from another room and that’s it.

This is also an energy-efficient machine. It consumes a moderate power of 38W. So, you won’t see a drastic jump on your electricity bill even if you keep it switched on for long hours.


Overall Observation

Apart from the unexplained how to clean Mi Air Purifier filter, the machine would make a very good investment. The enhanced filtration system, OLED display, chic appearance, and smart features, this does make up for every buck you invest in it.

In fact, it is one of the most value-for-money packages when it comes to choosing a Mi Air Purifier. However, the price does range higher than regular Mi products.

But, if you are someone who seeks quality over price and knows that smart investments sometimes cost higher, this air purifier would be perfect for you and your family.



Air purifiers are important to stay healthy. Xiaomi’s Mi Air Purifier 3 is the best deal you can get in the market. If you look beyond the minor flaws, you will see that this air purifier has everything one can seek from a machine that is meant to clean the air.

So, go ahead and make a smart choice by investing in it and take a deep breath of fresh, uncontaminated air.


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